During December 2024, Gaowenju focused on improving the correctness and reliability of HTTP client redirect handling in the cloudwego/hertz repository. He addressed a critical bug where the Host header was not updated during HTTP redirects, ensuring that the Host is now derived from the redirect Location header. This change, implemented in Go, prevents misrouting and improves interoperability with downstream services and caching proxies. Gaowenju also added automated regression tests to validate the new behavior and safeguard against future regressions. His work demonstrated depth in HTTP client internals, redirect handling, and testing, resulting in a more robust and production-ready client.